On my 1987 model, I removed the center cleat and installed port and starboard schaefer 8" stainless steel cleats with oversized washers (one inch I believe). These cleats have two bolts and the installation of these was very tight. Prior to deciding how to proceed, I read all the threads related to this installation and getting to the two bolts was difficult. I did not have to install any new beckson ports, I was able to reach the port and starboard positions with difficulty, and dropped the nuts and washers a few times into the forward bilge. It is my belief that four bolt cleats will not fit in this location because remember you still need some kind of backing plate or large washers. Catalina used smaller washers than I used. These cleats looked so nice that I replaces the stern cleats as well. If you do this upgrade, make sure you use at least 8" cleats.